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Resumen del manual
Purge Non-Condensibles. Each of the above steps is discussed in detail in this instruction. Read entire instruction before starting installation. Remove four shipping bolts holding absorption unit to crate base before placing unit on permanent mounting slab. NOTE: Unit is shipped with condenser fan guard inverted. Remove, place with convex side up and fasten. I. LOCATE AND MOUNTABSORPTION UNIT The absorption unit may be located at ground level or on the roof. Consult local codes for information concerning proximity to property lines, height above roof, obstructions, etc. A. MOUNTING BASE 1 1. Use non-combustible materials. 2. Base should be large enough that unit will not overhang. 3. Poured concrete slab, minimum 4” thick, recommended for ground installation. On roof installations a metal plate is satisfactory. Leave 4" to 8” clearance between roof top and metal plate. 4. Mounting base should not obstruct drain holes in base angle of unit. Drainage required to dispose of rain, melting snow, etc. m 450 D bri|ant I EPN 39450D1 COPY DO NOT ¡RhMCDVE A. G. A. APPROVED Certified in accordance 'ith A.R.I. standard 250—58. CERTIFICATION APPLIES ONLY WHEN USED WITH PROPER COMPONENTS AS SPECIFIED BY MANUFACTURER. B. CLEARANCES See Figures 1 and 2 for typical locations. 1. Absorption unit should have a minimum clearance of 2 feet on all sides from any adjacent obstruction. 2. Avoid overhead obstruction. Place unit at least 2 feet from plumb line of any overhang. 3. Avoid locating the unit where hot condenser discharge air can impinge on nearby obstruction and mix with the cooler inlet air. This is particularly important when two units are placed side by side. EH 450-2 CANCELS: EH 450-1 EFFECTIVE 12/1/63 DIMENSIONS RATINGS AND CAPACITIES DIMENSIONS SIZE A B C D E WATER INLET WATER OUTLET 36 40-3/8 48 53 5-5/16 15-1/2 1 1 54 46-3/8 56 60 7-1/16 18-3/8 1-1/4 1 MODEL 36-450 D 54-450 D Cooling Capacity BTUH 34,000 52,000 Heat Input BTUH 120,000 180,000 Gas Connection Size INCHES 1/2 3/4 Condenser Air Delivery CFM 4,500 6,700 Water Flow (Min. Required) GPM 7.5 11 Max. Frictional Loss Handled by Chiller Pump FT HEAD 23 20 Max. Elevation of Coil Above Chiller FT 22 22 Condenser Fan Motor 115V, 60 Cy., 1 Phase HP 1/3 1/2 Pump 115V, 60 Cy., 1 Phase HP 1/8 1/8 Minimum Wire Size* AWG 14 12 Refrigerant Type 717 717 Amount LB 24 42 Approximate Shipping Weight LB 1044 1544 *NOTE: Satisfactory where distance, measured along wire path, between unit and connection into main panel does not exceed 100 ft. Where distances are longer, wire sizes should be increased accordingly. EH 450 -2- AVOID OVERHANG SLEEPING QTRS. □ AVOID “ELLS" GARAGE LIVING AREA C’ CONCRETE SLAB p|úp¿£°V-'' Figure 1 Figure 2 TABLE I - DISTANCE BETWEEN COIL AND CHILLER NOMINAL PIPE SIZE POLYETHYLENE Feet COPPER Feet GALVANIZED Feet 36 54 36 54 36 . 54 3/4 40 — 35 — 25 — 1 150 * 45 o * 40 90 * 30 1-1/4 530 * 145 * 360 * * O o 370 * 90 * 1-1/2 1585 * 310 * 815 * 205* 770 * * o Os 7 PREVAILING WIND GOOD LOCATION NOTEl Values shown are for one direction only. Multiply by two to obtain the total length of pipe from chiller to coil and return. * Pipe lengths exceeding 75 feet may require additional chilled water additive. (See Section V, this instruction. II. CONNECT CHILLED WATER LINES A. MATERIALS Refer to section on “Cold Weather Protection” at the end of this instruction. 1. Piping a. Polyethylene Plastic Pipe - use medium density flexible pipe whose wall thickness approximates Schedule 40 pipe (Commercial Standard CS 197-60). Pipe must be virgin plastic. Do not use pipe manufactured from re-claimed plastic. b. Copper - satisfactory substitute. c. Galvanized - satisfactory substitute. 2. Fittings a. Nylon - use when possible. b. Brass - satisfactory substitute. c. Galvanized - satisfactory substitute. B. PIPE LENGTH AND DIAMETER Table I shows maximum length of pipe of different diameters that can be used between the pump discharge and the coil inlet and still maintain minimum allowable (design) water flow rate. 1. Multiply table values by two to obtain the total length of pipe from chiller to coil and return. 2. Length is measured along the pipe path and therefore includes vertical distance between the water coil and the chiller. 3. Lengths shown in Table I are based on using a total of eight elbows in the entire water line (chiller to coil and return). Lengths are predicated on the use of a Bryant matching water coil. For greater distances use larger pipe or add a pump. EH 450 II. CHILLED WATER LINES (cont’d.) C. INSULATION 1. Insulate supply and return lines separately. 2. Material should be of good quality and be covered with a good vapor barrier. Armaflex or equivalent is recommended. Wall thickness: 1/2” - south of 40° N. latitude 3/8” - north of 40° N. latitude D. HEIGHT OF COIL ABOVE ABSORPTION UNIT Maximum vertical distance from chiller outlet to top of co...